<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>首页</title>
    <script src="https://cdn.jsdelivr.net/npm/vue@2.7.14/dist/vue.js"></script>
</head>
<body>
  <div id="app">{{msg}}</div>
  <script type="text/javascript">
    //element
    let vm = new Vue({
        el:"#app",
        data:{
            msg:"欢迎您"
        }
    });
  </script>  
</body>
</html>